Why Are Oceans Colder Even though They Are Closer to the Core?

temperature of the Earth’s core around 5430 °C It is said to be. On the other hand, the bottom of the oceans drops to minus degrees.

Logically, as we get closer to the Earth’s core Shouldn’t the temperature of the water also increase? When you think of plain logic, yes, but the situation is a little more complicated than that.

There are certain layers.

Temperature inside the Earth; As it progresses from the core to the surface, such as the earth’s crust, the upper part of the mantle and the water layer. with insulating layers encounters. These layers make it very difficult for heat to move upwards.

So the temperature of the Earth’s core It cannot reach the oceans so easily. Of course, this is not the only reason, let’s continue.

Ocean waters are losing the heat they receive from the sun.

The water on the surface of the oceans is heated by the energy coming from the sun, but this sunlight does not reach the depths. Heat received from the sun, It evaporates and cools. As the water cools, it becomes denser and sinks to the bottom.

This is called heat convection of water and hot water stays on the surface and colder water flows. It happens by water sinking to the bottom. For this reason, ocean waters remain cold.

The amount of oceans should not be underestimated.

Because the oceans contain huge amounts of water, heat from the surface spreads throughout the ocean It’s quite difficult.

In addition, the heat flow coming from the core towards the earth slowly passes through the mantle. a large amount is lost and this heat flux remains very little on the ocean floor.

Pressure does not increase temperature.

Although we might think that pressure would increase temperature, this is not true for incompressible liquids such as water. After all, water a mostly incompressible liquid. Although the pressure increases as you go deeper, the water does not become hotter.

For all these reasons we have mentioned, the depths of the ocean Even though it is close to the Earth’s core, it does not heat up.

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